I had an old ATI graphic card and was using the proprietary drivers on Ubuntu 14.04. I replaced the card with a Geforce 750 ti and Ubuntu doesn't start anymore. I cannot open a login screen with CTRL+ALT+F1, the system is totally locked.
My idea is to replace the card with the old one, uninstall the proprietary drivers and, afterwards, reinsert the new card and reinstall the correct drivers.
Would this procedure work? Is there an alternative one that does not force me to replace the hardware?